Adaptation and latent structure of the Brazilian version of the Ego Dissolution Inventory (EDI-BR): an exploratory study

Adaptation and latent structure of the Brazilian version of the Ego Dissolution Inventory (EDI-BR): an exploratory study

Existing scales that seek to measure alterations in self-experience were developed based on studies conducted in developed countries. Therefore, the aim of this study was to evaluate the psychometric properties of the Ego Dissolution Inventory (EDI) after translating and adapting it for the Brazilia...

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Bibliographic Details
Published in:Trends in psychiatry and psychotherapy Vol. 46; p. e20220491
Main Authors: Bienemann, Bheatrix, Longo, Marcio S C, Ridolfi, Mariana, Multedo, Marco, Cruz, Lucas V M, Schenberg, Eduardo, Tófoli, Luis Fernando, Mograbi, Daniel C
Format: Journal Article
Language:English
Published: Brazil Associação de Psiquiatria do Rio Grande do Sul 01-01-2024
Subjects:
Adolescent
Adult
Brazil
Ego
ego death
Ego dissolution
Factor Analysis, Statistical
Female
hallucinogens
Humans
Male
Middle Aged
Original
psychedelics
PSYCHIATRY
psychometrics
Psychometrics - standards
Reproducibility of Results
Translating
Translations
Young Adult
Brazil
Ego dissolution
psychedelics
psychometrics
ego death
hallucinogens
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Summary:Existing scales that seek to measure alterations in self-experience were developed based on studies conducted in developed countries. Therefore, the aim of this study was to evaluate the psychometric properties of the Ego Dissolution Inventory (EDI) after translating and adapting it for the Brazilian context. The measure was translated by two translators fluent in both English and Portuguese, followed by back-translation into English to ensure there was no loss of meaning. The scale was used in an online survey exploring substance use. A total of 528 participants answered the full scale. We calculated the Kaiser-Meyer-Olkin (KMO) measure to evaluate sampling adequacy, then ran exploratory factor analysis (EFAs) to investigate the factor structure of the EDI. The scale showed acceptable psychometric properties, with excellent internal consistency and sampling adequacy for factor analysis. Kaiser-Guttman's criteria and Hull's method indicated a three-factor solution, while parallel analysis suggested a two-factor solution. All items showed salient loadings, with two items exhibiting cross-loading. Positive but weak correlations were found between EDI factors 1 and 2 and nature relatedness. The validated scale showed solid psychometric properties, with potential differences in factor structure in relation to the English version. Considering validation is an ongoing process, it is recommended that studies be conducted comparing ego dissolution scores across distinct substances and different regions of the country.
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Disclosure
No conflicts of interest declared concerning the publication of this article.
ISSN:2237-6089
2238-0019
2238-0019
DOI:10.47626/2237-6089-2022-0491